Big rig wreck on I-45

August 21, 2012 |By Houston Chronicle staff

An 18-wheeler overturns, losing a load of wood

Mayra Beltran/Houston Chronicle

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An 18-wheeler broke through rail guard and landed below on the exit ramp to Broadway St. off the Gulf Freeway on Tuesday, Aug. 21, 2012, in Houston. An 18-wheeler ran off the Gulf Freeway as the driver was attempting to curve on ramp merging onto 610 eastbound loop when it struck the guardrail and drove on to the Broadway exit below ramp. Driver was wearing his seatbelt, and only suffered a scratch on his elbow.

Mayra Beltran/Houston Chronicle

4of8

An 18-wheeler broke through rail guard and landed below on the exit ramp to Broadway St. off the Gulf Freeway on Tuesday, Aug. 21, 2012, in Houston. An 18-wheeler ran off the Gulf Freeway as the driver was attempting to curve on ramp merging onto 610 eastbound loop when it struck the guardrail and drove on to the Broadway exit below ramp. Driver was wearing his seatbelt, and only suffered a scratch on his elbow.